Undocumented immigrant was posing as Austin woman By Tony Plohetski AMERICAN-STATESMAN STAFF Friday, May 7, 2004 In February 2003, Airman 1st Class Cristina Alaniz, 24, was preparing to leave Moody Air Force Base in Georgia to return to Iraq, where she would spend six months protecting military convoys and installations from attack. She was pursuing her dream, serving her country. During her 2 1/2 years in the Air Force, she had crossed the globe and spent four months in Kuwait during the prelude to war with Iraq. Four states away, 22-year-old Cristina Alaniz of Austin logged onto a Web site...